D70 High shutter speed problem

[mpenza]

My number one problem with the D70 now is the credit card bill is due, and I don't know where to find the money to pay it! :cry:

And this is something that Nikon can't help you with ;p

 

[2100]

My number one problem with the D70 now is the credit card bill is due, and I don't know where to find the money to pay it! :cry:

Get more freelance assignments to do! Lower prices to make it more attractive.

 

[2100]

The reason I asked was because if you use A, P, S modes, the shutter will automatcally adjust down to a flash sync speed, ie, 1/500s or slower in the case of D70, when it detects that you have mounted a flash and it has been switched on. Just need to confirm that this has not happened.

Yeah, i think i read something about that. Well the thing is it's basically a manual flash, i am wondering if Nikon fires the signal to the hotshoe first then trips the shutter. Coz as you can see, 1/8000 is very fast. How fast is 1/16th power on a 285HV, i mean the flash discharge duration? There is no unevenness as you can see. Basically as long as it works and i can take pics, i am happy (it's a manual flash anyway.... :bsmilie: ).

Seriously, i can't reproduce any of this uneven colour shift at 1/8000th sec.

 

[2100]

ORH! I see it now! 1/8000th sec got this problem one!! WOW!

Taken from dpreview thread :
http://www.pbase.com/image/27117391

Can any uncle tell me how come mine does not have it? :think:

 

[mpenza]

don't use flash. most, if not all, of those pics were taken without flash.

 

[2100]

don't use flash. most, if not all, of those pics were taken without flash.

Seriously, i don't know what is the difference, but i will try that out soon.
Actually, i did try that out and did not see the problem, but it wasn't a clear uniform sky.

 

[aaronng]

One thing to note though is that when the shutter speed is faster than the x-synch speed (1/500s), there may be uneven flash exposure. FP flash and its equivalent solved the problem by flashing in "pulses" and allows syncing of the flash (with even flash coverage) as fast as the camera's fastest shutter speed (e.g. in D2H and canon d/SLRs) but at a reduced range.

an article on focal plane (fp) flash:
http://www.photozone.de/3Technology/flashtec5.htm

According to Ken Rockwell, the D70 uses mechanical shutter for 1/125 and below, and the electronic shutter (turning on and off the CCD) for above those speeds. This is similar to the D1/H/X when using external strobes with the PC socket, so probably that is why 2100 was able to get full frame exposure with manual flash.

Aaron

 

[mpenza]

if that's the case, they probably shouldn't even have a limit (i.e. 1/500s).....

 

[gooseberry]

Can anyone see a colour caste to this photo ? I can't seem to on my laptop lcd.
Those of you with better monitors can you see ?

Shot at IS200, f3.8, 1/6400s, using the kit lense, all settings are default of camera except using custom tone curve (photogenetic's white wedding 3.3)

Looks like with a properly exposed image you don't get the caste, but with an underexposed image you might.

http://www.pbase.com/gooseberry/inbox

 

[Audi]

Ummm. I do see the slight reddish tone on the right side and slight blueish tone on the left.

 

[loupgarou]

see nothing on my LCD monitor. wait i go home check on my CRT monitor.

however, I think you're supposed to do an autolevels as well.

 

[2100]

see nothing on my LCD monitor. wait i go home check on my CRT monitor.

however, I think you're supposed to do an autolevels as well.

Check the histo of the levels before, do auto levels, and then check after. Some suggest that shift the saturation lever all the way to the right too for MAX EFFECT. Or shift to +50 also can. :sweat:

If anyone can find an instance in which one can shift as well as compress the range so much, or saturate so much, do enlighten me.

 

[ekoswara]

Found an interesting discussion here regarding D70 high-speed shutter problems :

http://forums.dpreview.com/forums/read.asp?forum=1021&message=8072167


My apology if this link has been posted before.

 

[Ansel]

Can anyone see a colour caste to this photo ? I can't seem to on my laptop lcd.
Those of you with better monitors can you see ?

Shot at IS200, f3.8, 1/6400s, using the kit lense, all settings are default of camera except using custom tone curve (photogenetic's white wedding 3.3)

Looks like with a properly exposed image you don't get the caste, but with an underexposed image you might.

http://www.pbase.com/gooseberry/inbox

Very simple lah, I mentioned this before. Just do an auto colour in PS and the devil will present itself. Left side blue, right side purple.

 

[loupgarou]

ok: I went home and check my CRT, not visible to me.

then I ran it through the digital workflow that every single photo of mine goes through. and there it is...

can you try an iso 400 version?

 

[aaronng]

if that's the case, they probably shouldn't even have a limit (i.e. 1/500s).....

There were many D1/X/H users using strobes at up to 1/8000 sync. Of course, at full power, the duration of the strobe was around 1/1000, so they would lose light at such high speeds. But at least there were no half-exposed photos. I think the 1/500 limit is imposed by Nikon to avoid underexposure since the flash is no longer a TTL-OTF method, but a preflash one. With TTL OTF, the flash would cut off once there was enough light measured, while the D/i-TTL methods use a preflash to measure the amount of light required.

If you use an dumb electronic flash with just the center contact, you should be able to shoot at 1/8000. Someone try this.

Aaron

 

[2100]

ok: I went home and check my CRT, not visible to me.

then I ran it through the digital workflow that every single photo of mine goes through. and there it is...


can you try an iso 400 version?

That picture sure looks tons more different from what was originally captured by the camera. :bsmilie: Suddenly clouds become all black and stormy, maciam a tornado may appear anytime. :bsmilie:

I'd just use a Cir-polariser in such cases if i wanna accentuate anything, in this case clouds only. You won't be able to do that if you have something in the foreground, like a person standing on the beach (unless shilouette). In any case, a lot of times i found that i had to bump the iso up and opening the aperture up all the way to 2.8. Even then, only the white clouds and bright sunlight.

I have shown a flash example earlier on, no problem.

 

[oeyvind]

According Simon Dai on fredmiranda.com forum

The D70 does have some problems in the initial batches, and you have to admit that the damned company has a great tradition of denying and fixing stuff in silence - unless you send you stuff in the service center, it's like non-existant at all.

Color moire, CCD blooming and color variations at high shutter speeds (above 1/640s) were all its problems - I knew that, I've seen that, and I've played with it. I don't really want to say these distracting/discouraging things on the board, but avoiding using the high shutter speeds, not pointing your camera to the sun, never shoot fine fabrics, etc. - ok, you can close your eyes, pretending you have the finest greatest camera in the world - but keep in mind, you paid you hard earned dollars - for what the manufacturer advertise. If Nikon ever said the D70 can only be used under 1/2000s, nobody would complain.

I'm glad that these problems I saw in the early samples being fixed gradually, most of the problematic machines are those with serial numbers 70XXXX shipped to China and Hong Kong, the latest ones starting from 75XXXX do not show these trashes, also the ones starting with the number 20XXXX shipping to Japan also had these problems AFAIK. I believe the ones starting with 30XXXX bound for the US should not exhibit these problems ... I haven't tried the ones shipping to Canada yet, we'll see pretty soon.

 

[2100]

According Simon Dai on fredmiranda.com forum

There is some degree of truth in it. Seems like the South Korean cams have problems with blooming. However i tried shooting into the sun, overexposing the sky like hell and didn't get it. Another dpreviewer in Malaysia didn't get it neither. Colour shift is .... yea it's there, but only if you shift around the saturation and levels so much that it's unrecognisable and so much different from the original exposure (ie wysiNwyg). You know, even the D2H exhibit this problem but to a lesser degree (only if one measurbates and shift around the settings a lot). Moire....even my C5050 had it. I printed some stuff out and nope it's not there. 300%, you can even see mice in the maze like pattern. (1D even has this maze thingy visible but to a lesser degree).

 

[oeyvind]

moiré is usually caused by the weak AA filter.